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Fractal-based binocular stereoscopic video compression coding/decoding method

A binocular stereo, video compression technology, used in stereo systems, digital video signal modification, television and other directions

Inactive Publication Date: 2012-08-01
BEIHANG UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

But compared with monocular video, binocular stereoscopic video system must transmit and store twice the amount of data, so it must be effectively compressed

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  • Fractal-based binocular stereoscopic video compression coding/decoding method
  • Fractal-based binocular stereoscopic video compression coding/decoding method
  • Fractal-based binocular stereoscopic video compression coding/decoding method

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Embodiment Construction

[0064] The method of the present invention will be further described in detail below in conjunction with the accompanying drawings. Only the brightness component Y is taken as an example, and the compression steps of the color difference components U and V are the same as the brightness components.

[0065]The present invention proposes a fractal-based binocular stereoscopic video compression and decompression method. In the binocular stereoscopic video coding, the left channel is used as the basic layer, and a separate motion compensation prediction method (MCP) is used for coding. The starting frame adopts block DCT transform coding, performs block motion estimation / compensation coding on the left-purpose non-I frame, calculates the pixel sum and pixel square sum of the sub-block related to the sub-block domain and the parent block domain, and then performs In the video reference frame search window, the full search method is used to find the most similar matching block, and ...

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Abstract

The invention provides a fractal-based binocular stereoscopic video compression and decompression method. In binocular stereoscopic video coding, a left channel is taken as a basic layer, a single motion compensation predictive mode (MCP) is adopted for coding, and the method comprises the following steps of: performing block DCT transformation coding on a left-eye start frame, performing motion estimation / compensation coding on a left-eye non-I frame, and calculating the pixel sum and the sum of squares of pixels of subblock domain and father block domain-related subblocks; searching the most similar matching block by using a full search method in a previous frame, namely a reference frame searching window of left-eye video; and finally compressing the coefficient of an iterated functionsystem by using a Huffman coding method. A right channel is taken as an enhancement layer, the MCP and a parallax compensation predictive mode (DCP) are adopted for coding, and the lowest error is selected as a predicted result. During the DCP coding mode, the polalization and directionality in a stereoscopic parallel shooting structure are fully utilized; and the corresponding decompression process comprises the following steps of: for the left eye, decoding the start frame I by adopting a reverse DCT transformation mode, and performing Huffman decoding on the non-I frame so as to acquire the coefficient of the iterated function system; performing macrolbock-based decoding, calculating the pixel sum and the sum of squares of pixels of father block domain-related subblocks in the previousframe; and for a right eye, calculating the pixel sum and the sum of squares of pixels of the father block domain-related subblocks in the right-eye previous frame and a left-eye corresponding frame.

Description

Technical field: [0001] The invention belongs to the field of video compression coding, and relates to the compression coding of binocular stereoscopic video. On the premise of ensuring that the compression ratio and PSNR remain unchanged, the computational complexity is greatly reduced, and it lays the foundation for the real-time application of binocular stereoscopic video coding. It further improves the performance of fractal video compression coding, making it more practical and popular. Background technique: [0002] The fractal theory was first proposed by Mandelbrot in the 1970s (see B. Mandelbrot. The Fractal Geometry of Nature [M]. New York: W.H. Freeman and Company, 1982.). The mathematical basis of fractal coding is the iterative function system (IFS) theory. Barnsley first used fractal coding for interactive image compression (see Michael F. Barnsley, Alan D. Sloan. A better way to compress image [J]. Byte Magazine, 1988, 13(1): 215-233.). Jacqain proposed a ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/26H04N7/50H04N13/00H04N19/533H04N19/597H04N19/61H04N19/90
Inventor 祝世平侯仰拴陈菊嫱王再阔
Owner BEIHANG UNIV
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